Utility for continuously writing to flash.

Used for boot analysis and to stress the filesystem to know whether or
not the cleanup is being done correctly.  Spawns two threads that
simultaneously write to the app's local data storage and the external
storage (SD card; sometimes emulated).

Intended to be invoked from the shell.

Bug 36444880

Change-Id: I82db5e4d25c534383a0e7ecc751ebad94f60e552
5 files changed